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S Chassis Technical discussion related to the S Chassis such as the S12, S13, S14, and S15.


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Old 02-22-2012, 09:09 AM   #1
DaveAZ
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Are you melting wires, or melting fuses? Since you have the means to test amperage, why not run the engine with no electrical load, and see if the huge load is caused by a specific system, then narrow it down?

Is the battery in the engine bay, or did you relocate to the trunk? 4 AWG cable is good for runs up to 10 feet, up to 100 Amp. Any longer, or any more amperage, and you need to use 2 AWG.

If your engine grounds are crappy (the large ones on the passenger side near the battery box, and also to the block in that area) you will see a larger current draw as well.

But hey, great job on having AC! We have the same setup as you, and the wiring for that is kicking our asses right now. lol. Good luck.
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Old 02-23-2012, 02:22 AM   #2
keMz
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Quote:
Originally Posted by DaveAZ View Post
Are you melting wires, or melting fuses? Since you have the means to test amperage, why not run the engine with no electrical load, and see if the huge load is caused by a specific system, then narrow it down?

Is the battery in the engine bay, or did you relocate to the trunk? 4 AWG cable is good for runs up to 10 feet, up to 100 Amp. Any longer, or any more amperage, and you need to use 2 AWG.

If your engine grounds are crappy (the large ones on the passenger side near the battery box, and also to the block in that area) you will see a larger current draw as well.

But hey, great job on having AC! We have the same setup as you, and the wiring for that is kicking our asses right now. lol. Good luck.
ya before the dual fans kick on so thats when i run the a/c its only drawing 10-11amps with my hids.
right now i got it wired so 1 fan is for a/c and 1 fan is for thermostat.
with everything plus 1 fan its about 25-30amps.
then with max load its pushing 40-45 soemtimes 50 if the engine is hot.

ya i think my grounds are good but maybe not, couldnt really find a diagram where im suppose to have the fatty grounds since my car was built from scratch. im hoping this is the problem but finding it is getting hard.

i will update this pic but this was right before the car was painted.
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